| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] to speed up the [noun] | 12 |
|
| 2 | be [vb pp] to speed up the [noun] | 10 |
|
| 3 | be [adj] to speed up the [noun] | 6 |
|
| 4 | be [adj] to speed up the [noun] | 6 |
|
